{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928060098",
    "entityType": "Track",
    "nonce": "0x86fa07f292ebbc03f9b6f580e7d4ebd53f51a7b9b4be2f7978c2a9d961c28916",
    "signature": "0x492e68915dd3f0965da298c39d8a4ab3ffb2912d3ebd4615adcc79505c47779d28ebf1c1ae0af09532e1a22d5afdea9e20ebe3ff92d28756d02ba2a348c0f6d61c",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}